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Intro.wmv. CaveMaps.org. 300+ Entrances on Google Maps 70+ Cave Outlines on Google Maps 500+ Full resolution surveys 1200+ Surveys catalogued & thumb-nailed 120 Visits per week No. 1 Google Hit for ‘Cave Maps’ Work in progress. Contributing Clubs. CPC RRCPC BPC NCC LUSS YSS ULSA

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Presentation Transcript
cavemaps org
CaveMaps.org
  • 300+ Entrances on Google Maps
  • 70+ Cave Outlines on Google Maps
  • 500+ Full resolution surveys
  • 1200+ Surveys catalogued & thumb-nailed
  • 120 Visits per week
  • No. 1 Google Hit for ‘Cave Maps’

Work in progress ...

contributing clubs
Contributing Clubs
  • CPC
  • RRCPC
  • BPC
  • NCC
  • LUSS
  • YSS
  • ULSA
  • Black Sheep Diggers
  • KCC
  • NPC
scan at the highest resolution
Scan at the highest resolution
  • E.g. 300 DPI Greyscale
how to restore anti aliasing
How to restore Anti-aliasing
  • Scan at high DPI
  • Clean up the image
  • Resample to reduce image size
slide38

Double Entrance.avi

Double Entrance (part 2).avi

Videos\Single Entrance.wmv

slide42

Zoom 1

Zoom 0

256 pixels

slide43

Zoom 2 (16 tiles)

Zoom 1 (4 tiles)

slide45

Zoom 21

Street View

Zoom 19

deepzoom examples
DeepZoom Examples

Ease Gill

Galegarth

The West Kingsdale System

slide66

Blackpool Tower 150m:

Error 26m

  • Ingleborough 723m:

Error 125m?

google v microsoft
Google v Microsoft

Google

Microsoft

4m Difference

conclusion
Conclusion

GPS Accuracy:

+/- 10m

Google Maps Accuracy:

+/- 10m ?

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